According to this Adobe support page, HARMAN have taken over the development and support for the Adobe AIR SDK, a cross-platform framework used by a wide range of applications and games.

It’s now a free and open-source project, with SDK support for Window, Linux, and macOS, and runtime support for only Windows and macOS.

To download AIR SDK, go to the link page below, accept the term and click download the SDK for Linux:

Then, extract the package, go to bin sub-folder, finally use either adl or adl_linux from terminal (right-click in blank area of that folder and click “Open in Terminal”) to test an AIR application without having to package and install it.

T ocreate an Air native extension, go to this discussion page, try to download and extract the path over the top of the SDK.

for Ubuntu 20 we need to provide a build of curl and to have the runtime know to look for this in the appropriate folder first. Should be able to provide an update for this although with a few other fixes that have gone in to the Linux build just now (crashes when using Worker objects) I’m wondering about creating another release just for the Linux build of the AIR SDK…. we may do a few more bits of real-world testing with applications that folk are sending in…